Door lock



Jill 19, 1949. I A. SCHOEPE 2,476,458

DOOR LOCK Filed Jan 29, 1947 IN V EN TOR.

Ad oh 'Schoepe Patented July 19, 1949 noon LOCK Adolf Schoepe, Los Angeles, Calif, assignor to Gate-Way, Inc., Los Angeles, Calif, a corporation of California Application January 29, 1947, Serial No. 724,971

This invention relates to looks.

Heretofore door locks have been constructed in which a key-controlled cylinder lock is mounted within the outside knob of the lock and which serves to control the operation of the look so that unauthorized persons cannot rotate the knob to retract the bolt or latch of the lock. However, on insertion of the key into the core or plug of the look a release mechanism may be actuated to enable the outside knob to retract the bolt. Heretofore it has been generally customary to permanently mount the cylinder lock in the outside knob by a means which is either of a permanent or semi-permanent nature. However, occasions arise when it is desirable to be able to remove the cylinder lock either for purposes of repair or replacement or to alter the tumblers to efiect a change of keys.

It is a primary object of the present invention to provide a novel, simple, and advantageous manner for fastening the cylinder look within the outside door knob in such a manner that the lock cannot be forcibly withdrawn from the knob from improvements in door the outside but on the removal of the inside knob and a few readily accessible parts of the lock, the attaching means becomes readily accessible to enable removal of the cylinder look from the outside knob to effect replacement, repair, or alterations of the tumblers to efiect a key change.

With the foregoing and other objects in view, which will be made manifest in the following detailed description and specifically pointed out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention, wherein:

Figure 1 is a horizontal section through a portion of a door illustrating the door lock embodying the present invention as having been installed therein;

Fig. 2 is a sectional view taken substantially upon the line 2-2 in the direction indicated;

Fig. 3 is a sectional view taken substantially upon the line 3-3 upon Fig. 1 in the direction indicated;

Fig. 4 is a plan view of the leaf spring which constitutes the lock retaining means;

Fig. 5 is a view in side elevation of the same; and

Fig. 6 is a partial view in horizontal section similar to Fig. 1 but illustrating in dotted lines the manner in which the cylinder lock may be detached and removed.

Referring to the accompanying drawings wherein similar reference characters designate'similar parts throughout, the improved door lock consists of an outside knob l0 and an inside knob ll. These knobs respectively are rotatably mounted on a stem rosette l2 and a plain rosette l3. Screws I4 extend through the plain rosette and into the 4 Claims. (Cl. 70224) stems of the stem rosette (2 for attaching these rosettes to the opposite sides of the door D. A half round sleeve [5 extends into the shanks or bases of the door knobs l0 and II and the edges of this half round sleeve abut against shoulders it in the door knobs so that the half round sleeve may be rotated in either direction by either door knob when otherwise freed for rotation. Rotation of the half round sleeve in either direction is effective to retract the bolt or latch I! by a mechanism housed within the housing I8. As this mechanism which eifects a retraction of the bolt or latch ii on rotation of the half round sleeve l5 forms no part of the present invention and may conform to conventional practice, it has not been illustrated herein.

Within the stem rosette I2 there is disposed a lock slide retainer l9 that has laterally slidable therein a lock slide 28. This slide has a recessed or notched end 2! engageable with a rib or boss 22 formed on the interior of the stem rosette I2. The lock slide 20 may be shifted into either of the positions shown in Fig. 3 by means of a plug 23, which is rigid with a rotary spindle 24 that is rotatable within the sleeve. The spindle 24 may be rotated either by a thumb key 25 that is rotatably mounted on the inside knob II or it may be rotated by the core or plug 26 that is rotatable within the cylinder 21 of the key-controlled cylinder look. This lock may conform to any conventional or preferred construction having suitable tumblers operable by a key that is inserted into the core and which can serve to rotate the core relative to the cylinder 2i. When the core is thus rotated its pins 28 will engage the end of the spindle 24 enabling the spindle to be turned thereby to shift the lock slide 28 from locking to unlocking position or vice-versa. As the slide retainer i9 is rigid with the outside knob it! it will be appreciated that when the lock slide 2!] is in engagement with the boss 22 that the outside knob It cannot be rotated. Conversely if the lock slide 20 has been shifted by the spindle 24 into unlocking position the outside knob I0 is then released to be capable of turning the half round sleeve 15 to retract the latch ll.

The above-described construction conforms generally to a conventional type of lock. The improvement resides in the manner in which the cylinder 21 of the lock mounted in the outside door knob lll'is releasably mounted therein. To this end a leaf spring 29 is rigidly attached to the body of the cylinder 21 and extends inwardly therefrom and into the shank of the outside knob. This spring may be attached to the cylinder 2'! in any conventional or preferred manner. As illustrated, however, the exterior of the cylinder 21 is grooved or recessed and the portion of the spring 29 disposed in the recess is corrugated as indicated at 30. The sides of the recess are then peened or mashed into firm engagement with the side edges of the corrugated portion of the leaf spring so as to efiectively lockthe spring in the recess and prevent its sliding inwardly therefrom.

Near the inner end of the leaf spring a tang 3| is struck out of the body of the spring presenting a shoulder 32 that faces outwardly and which is engageable with a shoulder 33 formed on the interior of the knob Iii. As the :leaf spring is biased to press outwardly or in a radial direction the shoulders 32 and 33 will .betnormally maintained in engagement thus retaining the cylinder 2? in the knob III against withdrawal. The spring 29 is preferably so arranged as to be on the opposite side of the spindle 24 from the half round sleeve is as illustratedin Fig. .2.

As :this spring exerts :reactionary ;f or c e ,tendingtto tilt the :cylinder'look within the knob is it .is preferable'to form arrib 3.4 'on the interior ofithe knob opposite the spring;29 against which theropposite side of the cylinder 21 1may bear -so as Ito resist this tiiting 'eiTect exerted by the spring.

It is "to be noted that the "spindle .24 is arranged in the path of :inward movement of the leaf spring 2.9 'so'that'aslonges the spindle 324 is in position'zthe spring 29 cannot bemovedinwardly to :disengage ashoulders "32 and 33.

NVl'lIlEVGiiitilS desired toremove the cylinder look from the outside knob is this :canbeeasily accomplishedsin the following manner. It is merely; necessary to ;.remove the screws i IA ;from theinside ofxthe door to detach gthe'plainzmsette i-Erand the inside :knob i I. Whenthisisifemoved the spindle Mrcanbe withdrawn leavinglthe space within'the half :rcund sleeve i'open. .;'A screw driver or other implement can then be inserted from :the inside of the door' through the space previously. occupied by the spindle '24 andtthe-inner end ofthe leaf .spring can be engaged :aS. illustrated iniFigqfi. By forcing the aspringinwardly the shouldersei 'and '33 may be disengaged thusreleasing the cylinder 2? for removalfrom the outside knob iii. *Whenthe lockisthusremoved? it maybe replaced, repairedor'its-tumhlersmodified to effect a changeof keys. To reinstall the lock it is merely necessary-to insertthe cylinder into the knob lil'until itiis seated therein'and in so'doing the leaf-sp-ringi-passes is normally adequate tO'flIlffilY; retain the; spring on the cylinder lock other means of attachment of= theqspring to theeylinder may be-employed if so desired.

Various changes may be made in thedetailsof construction without departing from vthe spirit and scope of the invention as definedbytheappended'claims.

.Lclaim:

1. In a door lock wherein a key-controlled cylinder lock having a core is mounted in one of the door knobs thereof, a leaf spring secured to the cylinder of the lock and extending inwardly therefrom into the door knob, and a shoulder thereon engageable with the shoulder on the interior of the knob for locking the lock against removal from the knob, said spring being adapted to jbe-forced inwardlyto disengage the shoulders andenableremoval of the look, a spindle operable by the core of the lock, said spindle being arranged in thepath of inward movement of the spring whereby it is first necessary to remove the spindle to clear the path of inward movement of the spring before the spring may be moved inwardly to disengage the shoulders and thus .release the lock.

2. =I-n a door'lockwherein a key-control1edcylind-erlockis mounted in one of the door knobs thereof, a'leaf spring secured to the cylinder of the leek-and extending inwardly therefrom into the door knob adjacent one side thereof, said springliaving a tang struckout of the bodytherecf providi-ng a'shoulder facing toward the outer end of-the door kncb,the doorknob presenting an i-ny-Jardly facing shouldenengageable thereby, the being so arranged that on displacing it-frorn its-normal position the shoulders may be disengaged to release the cylinder lock, the intericrof the knob having a rib arranged to bear against the side-of thecylinder lockon the diametrieailyopposite side thereof'from the spring.

In a'door look, a knob into the inner end of which a latch operating spindle extends, a lock having'a core receivable in the outer end of the knob, spring carrying a detent'secured to the core,-t-here-being a-shoulder-on the interior of the-knob engageable by the'detent to hold the core againstwithdraWal, said detent and shoulder being soarran'ged with relation to the spindle-that the spindle when in position in theknob prevents flexing of the spring to disengage the detent from the shoulder but when the spindle is removed the spring is affordedsufiicient room to enable its being'fiexed to disengage the detent from the shoulder and to release the core for withdrawal from theflknob.

'4. Ina door lcck, a knob into the inner end of whieha latch operating spindle extends, a lock having acore receivable in the outer end of the knob, aspring carrying a detent secured'to the core, there being a shoulder on the interior of the knob, engageable by the detent to hold the core against withdrawal, said detent and shoulder being arranged at the side of the spindlewhen the spindle is in position within the knob, the spring being engageable with the spindle to prevent its beingflexed to disengage its detent from the shoulder when the spindle is in position but being adapted to be flexed to disengage the detent from the shoulder when the spindle is withdrawn.

'ADOLF SCHOEPE.

IE Of' this, patent:

UNITED STATES PATENTS Name Date .YQieh Hss-r-a O, 1935 Num er 2,023,941 

